The Microsoft Store Services SDK includes advertising and engagement frameworks. After adding this NuGet to your project, add a reference to the extensions you want, such as "Microsoft Advertising SDK for XAML" or "Microsoft Engagement Framework" (may require reopening project).

Yahoo App Publishing provides a flexible ad-serving platform that is easy to set up and use, enabling you to maximize your ad revenue and engage actively with your users. As a Publisher, you can drive revenue by creating banners, interstitials, native and video ads for your app.